Analysis: Four things to look out for in La Liga matchday 20

MADRID, Jan. 17 (Xinhua) -- Both FC Barcelona and league leader Atletico Madrid play in the south of Madrid this weekend as the second half of the La Liga season kicks off. Meanwhile, Valencia faces a tough decision ahead of a crucial game. Here's what to watch as the action unfolds:

1. Getafe to test Barcelona

Barcelona visits Getafe with morale high after a 5-2 win over Real Madrid in the Spanish Super